If the null hypothesis is true, __________ gives an accurate indication of the variation within the populations (i.e., the variation due to chance factors)
A)the estimated mean of the distribution of variances of Population 1
B)the variance of the difference scores for Population 1
C)the between-groups estimate of the population variance
D)the estimated mean of the distribution of variances of Population 2

Question

Quizplus · Accepted Answer

The between-groups estimate of the population variance, also known as the variance of the sample means, gives an accurate indication of the variation within the populations if the null hypothesis is true. This is because in this scenario, any variation observed between the sample means is likely due to chance factors, and the between-groups estimate of the population variance takes this into account.

If the Null Hypothesis Is True, __________ Gives an Accurate